Question 672805
mary has grades of 87 and 82 on her first two algebra tests. If she wants an average of at least 78,what possible scores can she make on her third test?
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Let "x" be her score on the 3rd test.
Equation:
(87+82+x)/3 >= 78
(169+x) >= 234
x >= 65
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Cheers,
Stan H.